Extract resolvers into a separate package so they can be used in other applications

[Stvad]

Example use-case: https://twitter.com/VladyslavSitalo/status/1462908339860430855

Depends on #34

Tasks

• [ ] Remove dependency on browser api so it can be used outside the context of the extension
• [ ] Potentially have several layers of resolvers (node compatible, browser compatible)

Considesations:

• can keep code in the same repo (making this a monorepo) potentially simplifying code management initially but potentially making future contributions harder
  • Or extract into a separate repo
• License: using a more permissive license (MIT, Apache, etc) is IMO a better approach for the library
• It'd be nice to have a single interface for accessing the resolvers (e.g. a set of functions) (vs current situation where users have to iterate through all resolvers)